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Publication numberUS3559568 A
Publication typeGrant
Publication dateFeb 2, 1971
Filing dateJan 14, 1969
Priority dateJan 14, 1969
Publication numberUS 3559568 A, US 3559568A, US-A-3559568, US3559568 A, US3559568A
InventorsStanley Edward W
Original AssigneeArmstrong Cork Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of controlling pattern repeat length
US 3559568 A
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Description  (OCR text may contain errors)

O Umted States Patent 1 1 3,559,568

[72] Inventor Edward W. Stanley 2,768,827 10/1956 Noble 101/181 Lancaster, Pa. 2,802,666 8/1957 Crosfield 101/1 81X [2]] App]. No 791,087 2,840,370 6/1958 Noble 101/181 [22 Filed Jan. 14, 1969 3,045,165 7/1962 Littwin 318/286 [45] Patented Feb. 2,1971 3,068,787 12/1962 DAllOglio et a1. 101/181 [73] Assignec Armstrong Cork Company 3,102,471 9/1963 Auer et al 101/181 Lancaster, Pa. 3,120,181 2/1964 Thiede 101/181 a corporation of Pennsylvania 3,264,983 8/1966 Lewis et a1 101 l 81 3,329,087 7/1967 Sandor et al v. 101/181 3,500,744 3/1970 Lewis 4. 101/23 [54] METHOD OF CONTROLLING PATTERN REPEAT LENGTH Primary Examiner-William B. Penn 1 Claim, 1 Drawing Fig. Attorney-Clifford B. Price [52] U.S.C1 101/32, 101/181;250/2191226/28z318/286;101/248, 101/219 [51] Int. Cl B44c 1/24, TR CT; The method f controlling the repeat kngth f a B41f13/10IG01l'12l/30 pattern to be embossed on sheet flooring. The embossed [50] Field of Search 101/23, 22, material is provided with register marks which appear Once f 185, 250/219, each pattern length. Photocells scan the register marks on the 219121219186 2191131 26/283019 31; 318/286 embossed product and sense any deviation from a predetermined spacing. The information sensed by the photocells is [56] References cued transmitted to a computer which operates a DC correction UNITED STATES PATENTS motor to adjust the drive of the embossing roll to return the 2,583,580 1/ 1952 Ludwig 250/219X spacing of the register marks to the predetermined spacing.

mmmrwz 1971 I 3,559,568

INVENT OR EDWARD W- STANLEY W 9pm ATTORNEY METHOD OF CONTROLLING PATTERN REPEAT LENGTH BACKGROUND OF THE INVENTION l. Field of the Invention The invention relates generally to rotary printing and/or embossing equipment and, more particularly, to rotary embossing equipment providing a repeat at a controlled spacing.

2. Description of the Prior Art The state of the art in the flooring industry has reached a point that it is now necessary to provide goods with an embossed design, which embossed design must match up with the design on adjacent goods to form a continuous-type design. In other words, flooring is being made so that it has an embossed design; and in order to secure the proper registration of one sheet of flooring with an adjacent sheet so that the sheets blend into an overall configuration, it is necessary that the sheets be embossed with the same pattern repeat length for each sheet.

If the embossing roll forming the sheet material moves too fast relative to the sheet material, the repeat length of the embossed pattern is compressed, while too slow movement of the embossing roll relative to the sheet material will cause the stretching out of the embossed pattern. Consequently, it is necessary that the embossing roll and sheet material move at exactly the proper relative speeds at all times. Due to normal wear, slippage and other factors in the production line, it is impossible normally to maintain the speed of the sheet material and the embossing roll the same all the time. There is a tendency for the speed of one relative to the other to be either too fast or too slow, and this in turn results in a shrinking or stretching of the embossed pattern. Consequently, when the sheet material is installed with the repeat lengths varying, the designs on adjacent sheets will not be in coordination.

At present, the only way being used to see that the repeat length of the embossed pattern is maintained is a manual conpattern which must be trol procedure. An inspector measures the repeat spacing of the embossed patterns shortly after they are formed on the sheet. If any irregularity is discovered, a manual control is operated to retard or speed up the drive for the embossing roll. Such an operation is barely acceptable at best as a means of controlling the repeat spacing of the embossed patterns.

It is the object of the invention herein to provide an auto matic structure for measuring and controlling the repeat spacing of embossed patterns on sheet goods. The automatic measurement is then used through a computer-type structure to automatically adjust the speed of the embossing roll to bring the pattern repeat spacings back into the required predetermined spacing.

SUMMARY OF THE INVENTION The invention here is the provision of a repeat control mechanism being provided on a conventional sheet flooring embossing line. A lower drive backup roll is placed under the sheet material, while over the sheet material is placed the embossing roll. The lower roll is direct motor driven while a mechanical differential transmission is connected between the drive for the lower roll and the drive shaft of the embossing roll. Therefore, it is possible to minutely change the speed of the upper roll relative to the lower roll.

The upper roll embosses registration marks on the sheet material along with the embossed pattern. These registration marks indicate the repeat length being generated on the goods. A photocell structure senses the marks on the sheet material; and since these photocells are spaced at the desired repeat length, failure of the two photocells to sense a signal at the same instance indicates a deviation from this desired repeat length. A computer-type structure takes the variation and converts it into the necessary information to drive a DC correction motor. The DC correction motor is connected to the differential drive transmission so as to vary the speed of the embossing roll to return the pattern repeat spacing to the correct dimension.

BRIEF DESCRIPTION OF THE DRAWING The single FIGURE of the drawing is a perspective view of the invention herein.

DESCRIPTION OF THE PREFERRED EMBODIMENT The sheet material 2 is a conventional vinyl floor covering which is approximately .090 inch thick. The material is fed over a drive and backup roll 4. Directly above roll 4 is an embossing roll 6 which is used to emboss the sheet material with a design pattern. Obviously the embossed pattern will be a repeat pattern since a roll embosser is being used. The upper roll 6 has a registration marks 8 which are formed on the sheet material as registration marks It). The spacing between any two adjacent registration marks 10 is an indication of the length of a repeat pattern. A conventional motor 12 drives the lower roll 4. Appropriate connecting mechanism 14 connects motor 12 to a differential draw transmission 16. The transmission I6 is in turn connected with the embossing roll 6 and drives this roll. Ideally, both rolls would be moving at the same speed, and the sheet material 2 would be moving also at the same speed.

Due to any number of factors such as wear on the drive machinery, slippage along the production line, etc., the sheet material 2 may be driven at a speed greater than or less than the circumferential speed of the embossing roll. When the cincumferential speed of the embossing roll and the sheet material differ, this will vary the repeat spacing. Too fast movement of the embossing roll relative to the sheet material causes the repeat spacing to be smaller than the standard repeat spacing while too slow movement of the embossing roll relative to the sheet material causes the repeat spacing to be longer than the standard repeat spacing. v

When the spacing between any two registration marks I0 varies from the standard, it is necessary to immediately note this factor and correct the speed of the embossing roll.

The apparatus for correcting the speed of the embossing roll utilizes two photocells which are mounted on a common mounting bar. The first photocell 18 is fixedly mounted while the second photocell 20 is adjustably mounted so tat the two photocells may be set apart the standard repeat spacing. The photocells are positioned to sense the register reference marks 10. If both photocells sense marks at the same instance, then the repeat spacing must be the required standard spacing. When the photocells sense marking at different instances, it is, therefore, necessary to correct the speed of the embossing roll. Depending on whether the repeat length is shorter than the standard or longer than the standard, either photocell 18 or 20 will sense the mark first; and the time difi'erence between the sensing of the marks by the two photocells will indicate the amount of error. The particular cell which senses first detennines in which direction the error exists.

The infon'nation secured by the photocells is fed to a computer-type structure 22, which is similar to that shown in U.S. Pat. No. 3,073,997, issued Jan. 15, 1963. Such acomputertype structure is conventional in the art and merely takes the information sensed by the photocells and generates a correction signal. The correction signal indicates in which direction and by what magnitude there is an error in the repeat spacing. The correction signal is fed to a DC correction motor 24, which is connected to the differential draw transmission 16. Depending upon whether the repeat spacing is too long or too short and to what extend, the DC correction motor operates to alter the transmission so that the speed of the embossing roll is changed in the right direction and by the right magnitude to return the repeat pattern spacing to its correct spacing.

While the preferred embodiment describes an embossed operation, the concept is equally applicable to a rotary printlug operation wherein the printing operation merely provides the repeat spacing of the embossed pattern, positioning two photocells relative to the registration marks, spacing the photocells apart the distance of the standard desired repeat spacing, sensing the registration marks with the photocells, feeding the sensing of the photocells to a computer means,

which fails to operate when both photocells sense marks at the same instance, but operates to create a correction signal when the photocells sense marks at different instances, providing a power drive for the embossing roll, providing a DC correction motor drive for the power of the embossing roll to adjust its speed and feeding the correction signal from the computer means to the DC correction drive whereby variations in pattern repeat spacing as sensed by the photocell structures is fed to the computer means to generate a correction signal to operate the embossing roll drive to correct the speed of the embossing roll drive to return the repeat pattern spacing to the required standard spacing.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2583580 *Jan 8, 1947Jan 29, 1952Askania Regulator CoWeb register control system
US2768827 *Jun 7, 1952Oct 30, 1956Electric Eye Equipment CompanyRegistration control device
US2802666 *Oct 29, 1954Aug 13, 1957Crosfield J F LtdRegister control systems for moving webs
US2840370 *Aug 7, 1956Jun 24, 1958Electric Eye Equipment CoRegistration control or indicating device
US3045165 *Jan 30, 1957Jul 17, 1962Littwin Arthur KElectrical control means
US3068787 *May 17, 1961Dec 18, 1962Caldara Viale EDevice for checking longitudinal registration on machines for performing repetitive operations on a continuous band
US3102471 *Apr 3, 1961Sep 3, 1963Champlain Company IncMultiple correction registration system for multi-color printing press
US3120181 *Nov 3, 1960Feb 4, 1964Hurletron IncCircumferential registration control
US3264983 *Feb 18, 1964Aug 9, 1966Champlain Company IncRegistration system for a moving web
US3329087 *Nov 30, 1964Jul 4, 1967HuckRegulation of repetitive pattern repeat length on a web
US3500744 *Aug 17, 1967Mar 17, 1970Modern Engraving & Machine CorIn-line carriage arrangement for embossing machines
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3694634 *Aug 16, 1971Sep 26, 1972Armstrong Cork CoPattern repeat length control system
US3774016 *Oct 4, 1971Nov 20, 1973Sun Chemical CorpControl of process according to registration indicia on material being processed
US3832064 *Dec 29, 1972Aug 27, 1974Armstrong Cork CoPattern length measurement and control by continuous-statistical-correlation
US3867889 *Aug 3, 1973Feb 25, 1975Stahl Urban CoApparatus for seaming pieces of textile fabric or the like
US3945317 *Jun 28, 1973Mar 23, 1976Umberto BrasaWeb registration system using retrograde web movement
US3974766 *Jul 1, 1974Aug 17, 1976Peter ZimmerProcess for imprinting spaced-apart web sections with a composite pattern
US3987723 *Mar 27, 1975Oct 26, 1976Sperry Rand CorporationPhase adjustment mechanism for use with a magnetic read station of a band printer
US4009551 *Apr 28, 1975Mar 1, 1977The Dow Chemical CompanyMethod and apparatus for registration of web material in forming filling and sealing industrial bags
US4072104 *Nov 3, 1975Feb 7, 1978Harris-Intertype CorporationPrinting unit drive system
US4334471 *Aug 18, 1980Jun 15, 1982Markem CorporationReference printing on moving surface
US4361260 *Jun 27, 1980Nov 30, 1982Hanlan Marc AWeb registration control
US4366372 *Aug 22, 1980Dec 28, 1982Innovative Design, Inc.Apparatus and method for counting repetitive marks on a running web
US4389009 *May 29, 1981Jun 21, 1983Kyoichi YamashitaHigh speed tape feeder
US4538515 *Oct 2, 1984Sep 3, 1985Marlin Manufacturing CorporationPrinting machine with programmed control of print cylinder motor and web tractor feed motor
US4541335 *Nov 28, 1984Sep 17, 1985Rengo Co., Ltd.Web printing apparatus with printing plate cylinder and web speed control
US4572752 *Jun 22, 1984Feb 25, 1986Adolph Coors CompanyPlastic film to a paper backing material
US4590859 *Mar 26, 1984May 27, 1986Monarch Marking Systems, Inc.Method of printing by sensing variable indicia tag format length
US4598564 *Jul 24, 1984Jul 8, 1986Kurt HeldMethod of profiling metal strips
US4658144 *Jul 17, 1985Apr 14, 1987Levi Strauss & Co.System for alignment and feeding cooperating fabric parts in sewing operations
US4682540 *Jun 12, 1986Jul 28, 1987Manville CorporationMethod for emobssing a non-repeating design
US4757930 *Aug 29, 1986Jul 19, 1988Adolph Coors CompanyWeb indicia reference signal generating system
US4781317 *Oct 27, 1986Nov 1, 1988Adolph Coors CompanyPhasing control system for web having variable repeat length portions
US4896605 *Feb 8, 1989Jan 30, 1990Asea Brown Boveri LtdMethod of cut position determination for printing machines
US4947685 *Oct 6, 1989Aug 14, 1990Am International, Inc.System for measuring the repeat length of a moving web
US4984458 *Jun 13, 1990Jan 15, 1991A.M. International, Inc.System for measuring the relaxed length of a moving web
US5073053 *Mar 5, 1990Dec 17, 1991Tokyo Electric Co., Ltd.Color discrimination apparatus for color ink ribbon
US5081923 *Dec 24, 1990Jan 21, 1992Enamel Products & Plating CompanyMethod of creating a registered pattern on a metal coil and associated apparatus
US5098507 *Jan 28, 1991Mar 24, 1992Mao Chen ChiRelieved plastic floor tile rolling press with an automatic alignment device
US5126578 *Jul 13, 1990Jun 30, 1992Bobst SaProcess and device for measuring displacement rates of a web running through a multi-color rotary printing press
US5208796 *Jan 3, 1991May 4, 1993Xerox CorporationMethod and apparatus for transverse image registration on photoreceptive belts
US5295571 *Jan 9, 1992Mar 22, 1994Rollin S.A.Method for continuously controlling an endless band and machine for carrying out this method
US5766389 *Jan 30, 1996Jun 16, 1998Kimberly-Clark Worldwide, Inc.Disposable absorbent article having a registered graphic and process for making
US5815481 *Jan 24, 1994Sep 29, 1998Xerox CorporationApparatus for transverse image registration of a photoreceptor belt
US5818719 *Jan 30, 1996Oct 6, 1998Kimberly-Clark, Worldwide, Inc.Apparatus for controlling the registration of two continuously moving layers of material
US5930139 *Oct 14, 1997Jul 27, 1999Kimberly-Clark Worldwide, Inc.Process and apparatus for registration control of material printed at machine product length
US5932039 *Oct 14, 1997Aug 3, 1999Kimberly-Clark Wordwide, Inc.Process and apparatus for registering a continuously moving, treatable layer with another
US5964970 *Oct 14, 1997Oct 12, 1999Kimberly-Clark Worldwide, Inc.Registration process and apparatus for continuously moving elasticized layers having multiple components
US5980087 *May 4, 1998Nov 9, 1999Kimberly-Clark Worldwide, Inc.Apparatus for controlling the registration of two continuously moving layers of material and an article made thereby
US6033502 *Oct 14, 1997Mar 7, 2000Kimberly-Clark Worldwide, Inc.Process and apparatus for registering continuously moving stretchable layers
US6092002 *Oct 14, 1997Jul 18, 2000Kimberly-Clark Worldwide, Inc.Variable tension process and apparatus for continuously moving layers
US6245168Feb 24, 2000Jun 12, 2001Kimberly-Clark Worldwide, Inc.Process and apparatus for registering continuously moving stretchable layers
US6264872 *Dec 4, 1998Jul 24, 2001Kimberly-Clark Worldwide, Inc.Method of forming thin, embossed, textured barrier films
US6652686Jan 21, 2000Nov 25, 2003Kimberly-Clark Worldwide, Inc.Processes and apparatus for making disposable absorbent articles
US6986820Jun 27, 2003Jan 17, 2006Kimberly-Clark Worldwide, Inc.Processes and apparatus for making disposable absorbent articles
US7458739 *Apr 19, 2005Dec 2, 2008Seiko Epson CorporationApparatus for processing target sheet and method of controlling embossing by apparatus for processing target sheet
USRE32967 *Nov 25, 1986Jun 27, 1989Xerox CorporationWeb tracking system
EP0329701A1 *Oct 22, 1987Aug 30, 1989Graphic Packaging CorporationPhasing control system for web having variable repeat length portions
EP0500467A1 *Feb 20, 1992Aug 26, 1992Rollin S.A.Procedure for continuously controlling an endless web and a machine for carrying out this procedure
WO1988003119A1 *Oct 22, 1987May 5, 1988Coors Co AdolphPhasing control system for web having variable repeat length portions
WO1991005219A1 *Aug 27, 1990Apr 7, 1991Am IntSystem for measuring the relaxed length of a moving web
Classifications
U.S. Classification101/32, 250/548, 318/286, 101/219, 101/181, 226/28, 101/248
International ClassificationB65H23/188, B41F13/08, B41F13/14, B41F33/00, B41F13/02, B65H23/192
Cooperative ClassificationB41F13/14, B65H23/192, B41F33/0081, B41F13/025, B65H23/1882
European ClassificationB41F13/02R, B41F33/00H, B65H23/192, B41F13/14, B65H23/188A